Lock for levers and the like.



C. E. WHITE.

LOCK FOR LEVERS AND THE LIKE. APPLICATION FILED APR. 17. I911. RENEWEDMAY 18. 1915.

1,165,477. Patented Dec. 28, 1915.

2 SHEETS-SHEET I WM M comm \IOLUMBIA PLANOGRAIH co, WASHINGTON, D. c.

C. E. WHITE. LOCK FOR LEVERS AND THE LIKE. APPLICATION man APR.17. 1911.RENEWED MAY 18. 1915.

1,165,477. Patented Dec. 28, 1915.

Q 2 SHEETS-SHEET 2.

lxm nwaeo g g 4 Z 71% M) y W nnrnn earns rarest l lTltJE.

CHARLES E. WHITE, OF MOLINE, ILLINOIS, ASSIGNOB TO DEERE & MANSUR-COMPANY,

A CGRPGBATIOH F ILLINGIS.

LUCK FOR LEVEBS AND THE LIKE.

Original application filed June 14, 1987, Serial No. 3

Specification of Letters Patent.

Patented Dec. 2 8, 1915 78,379. Divided. and this application filedApril 17,

"a specification, reference being had therein to the accompanyingdrawing.

This invention relates to locking devices for levers and the like. Theinvention is applicable to levers of various kinds in various relationsand the locking device is also applicable to movable parts of machinesor structures other than levers. In the present application I show theinvention in connection with a foot lever such is employed to swing thescrapers of disk harrows. .This application, in fact. is a division ofmy application for disk harrows, filed June 1 1,

r 1907, Serial No. 378,979. upon which were granted Letters Patent No.1,020,530. In the present application I show as much of the harrowmechanism as is essential for a clear understanding of the lockingdevice.

The object of the invention is to provide a lock or stop device forlevers, and the like, which is simple in construction and convenient tooperate.

In the drawings, Figure 1 is a plan view of a portion of one of thegangs of disks of a harrow. Fig. 2 is a vertical section taken on theline 22 of Fig. 4:. Fig. 8 is a frag mentary view showing a detail ofthe construction. Fig. l is a vertical section on the line 4ll ofFig. 1. Fig. 5 is a View similar to Fig. 4- showing the lever in adifferent position.

Referring in detail to the construction shown, 1 and 2 are parallel barswhich are rigidly connected by transverse bars or castings 3, 1 and 5 soas to form a rigid frame.

6, 6 are a series of disks suitably mounted upon a spindle 7. The disksare spaced from each other by spools or sleeves 8, 8 and two of thesespools are rotatably mounted in bearing boxes 9, 9 which are carried byuprights 10 rigidly secured to the top frame.

11 is a square rock shaft rotatably mounted in brackets 12 and 13carried by the frame bar 2. To this rock shaft are rigidly clampedscrapers 14, 14 which have their lower ends arranged to engage theconcave sides of the disks. f v

15 is a coil spring surrounding the rock shaft 11 and having one endextended upward to engage the frame bar 2 and its other end extendedrearward to engage a fingerlike extension 16 of the clamp which carriesthe adjacent scraper lei. This spring tends both to press the scrapersagainst the disks and to swing the lower ends of the scrapers inwardtoward the axis of the disks.

1? is a foot lever rigidly connected at one end to the rock shaft ll andformed at its free end with a suitable foot rest 17. Normally the spring1 holds the scrapers adja cent the axis of the disks, at which time thefoot lever in its uppermost position, but when it is desired to swingthe scrapers outward and inward to clean the disks of accumulated soilor trash, the driveig who sits upon a seat at 18, presses downward uponthe foot lever to rock the shaft 11 and Swing the scrapers outward whilethe spring serves to return the scrapers when the driver relieves thelever from downward pressure. in the operation of such a disk harrow lhave found that it is desirable at times to hold the scrapers in contactwith the peripheral parts of the disks, for in some soils it is notnecessary to constantly swing the scrapers in order to keep the disksclean. In order to hold the scrapers in such a position, 1 provide animproved locking device, and it is this locking device to which myinvention more especially relates.

19 is an upright pin or bolt which is screwed into a bracket 20 mountedon the lever 17. By turningthe bolt 19 it can be adjusted up or down inthe bracket and is secured in adjusted position by a nut 21. 22 is abracket secured to the frame bar 1 at a point adjacent the lever 17 andthe bolt 19. This bracket has an aperture 22 through which the bolt 15)extends. On the front upturned end 22' of the bracket is pivoted anoscillating lock or stop 23. This stop has a handle part 23 and carrieson its rear side a rearward extending fiat sided flange 23*. On itsfront side the stop is formed with a rib 23 which is designed to engageshoulders 24, 25 on the bracket 22, so as to limit the oscillatorymovement of the stop 23 to something less than 90 degrees. The extremepositions of the stop are shown by the full and dotted lines in Fig. 2.

l/Vhen the stop or lock 23' is in the position shown in full lines inFig. 2 it has no effect upon the foot lever 17, because the flange 23 ofthe stop is out of the path of the bolt 19, so the latter is free torise and fall. If,

face of theflange 23 is flat and the engag ing end of the bolt 19 isalso flat so that the upward pressureof the bolt 19 caused by the spring15 tends to hold the parts in the locking position indicated by dottedlines in Fig. 2.

When it is desired to release the lever from the lock it is notnecessary to manually move the lock 23 for by simply pressing downwardon the foot lever 17 the head of the bolt 19 is withdrawn fromengagement with the flange of the lock and the latter moves under theaction of gravity from the position shown in dotted lines of Fig. 2 tothe position shown in full lines. This simple gravity release of thestop makes the locking device exceedingly convenient.

I have shown my improved lock or stop device in connection with aswinging lever, but it will be readily understood now that it can beused to look any oscillatory part or member whether it move about anaxis or otherwise. 7

1 do notherein claim any of the subject matter covered in the claims inmy application Serial No. 670,412, filed Jan. 10, 1912, for improvementsin disk harrows, which was also filed as a division of the aforesaidapplication, Serial No. 378,979, upon which,

as aforesaid, Letters Patent .No. have been issued.

What I claim is: r

1. The combination of a lever, a support to which the lever 1s pivoted,means compr1s ing a spring for moving the lever in one Y direction, arod adjustably connected with the lever and a stop pivoted to thesupport f and movable'into or out 'of the path of the rod, one portionof the said stop being en- T larged and of sufficient weight to normallyhold the stop by the action of gravity out of a rod connected with thelever, a pivoted. step actuated by gravityto normally lie in lines outof the path of therod and manually movable into the path of the'rod when7 the lever is mover. against the action ofthe spring to a point nearthe endof its travel.

3. The combination ofa support, a lever pivoted thereto, meanscomprislng a spring for moving the lever in one direction, a rodadjustably connected with the lever, a piv oted stop manually movable toa position abutting against the end of, the said rod whenthe lever ismoved against the action of the spring to'a point *near the end of itstravel, the said stop being actuated by gravityto normally lie in aposition where it does not interfere rod.

In testimony whereof Iaflix my signature in presence of two witnesses.

V v 7 CHARLES E. WHITE. Witnesses:

TIMOTHY E. CONCANCON, OSCAR TINDAHL.

0011165 05 'this Patent y be obtained for five cents each, by addressingthe Commissioner of Patent I Washington, D. C. V p a with the movementof the

